Ease out, not in?

programming flash
1

I know how to easeIn a movieClips property using something like:
this._x+=(Xvalue-this._x)/5 so it gradually slows down.
But what would I use to make it start slow then speed up?
I am guessing something like:


var speed =20
this.onEnterframe=function(){
  this._x+=(Xvalue-this._x)/speed
speed--
if(Math.abs(Xvalue-this._x)<1{
 this._x=Xvalue
speed=20
delete this.onEnterFrame
}
}

But trying this on multiple mcs and it goes wack because speed is constantly changing. How can I declare the speed var for each onEnterFrame?
Or if you now of a better way, please enlighten me :slight_smile:

Josh